As part of a larger system (which converts function parameters to
a suitable type), I need to solve the following: pass a member
function to a "run" template function, access its
ParameterTypeTuple, and actually be able to run the function.
I've simplified the problem (see below). Is there a way to pass a
single argument to "run" ?
Both attempts 1 and 2 didn't compile. Attempt 3 compiles but is
very bulky (need to pass 2 args).
Also I can't pass &a.fun2 as fun2 is not static.
----
class A{
void fun2(double x){
writeln("in fun2 with arg:",x);
}
}
void run(alias fun,T...)(T args){
writeln(typeid(ParameterTypeTuple!(fun)));
fun(args);
}
void run2(alias fun,alias fun2,T...)(T args){
writeln(typeid(ParameterTypeTuple!(fun)));
fun2(args);
}
void test(){
auto a=new A;
//attempt#1
//run!(a.fun2)(10);//compile error: Error: need 'this' to access
member fun2
//attempt#2
//also tried to just pass x=>a.fun2(x), but then
ParameterTypeTuple doesn't work with lambdas.
//attempt#3
run2!(a.fun2,x=>a.fun2(x))(10);//works but ugly
}
----
